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Exploring the Ascorbate Requirement of the 2-Oxoglutarate-Dependent Dioxygenases.
J Med Chem
January 2025
Ma̅tai Ha̅ora - Centre for Redox Biology and Medicine, Department of Biomedical Science and Pathology, University of Otago, Christchurch, Christchurch 8140, New Zealand.
In humans, the 2-oxoglutarate-dependent dioxygenases (2-OGDDs) catalyze hydroxylation reactions involved in cell metabolism, the biosynthesis of small molecules, DNA and RNA demethylation, the hypoxic response and the formation of collagen. The reaction is catalyzed by a highly oxidizing ferryl-oxo species produced when the active site non-heme iron engages molecular oxygen. Enzyme activity is specifically stimulated by l-ascorbic acid (ascorbate, vitamin C), an effect not well mimicked by other reducing agents.
View Article and Find Full Text PDFCharacterization of Factors Associated With Death in Deceased Patients With Mitochondrial Disorders: A Multicenter Cross-Sectional Survey.
Neurology
February 2025
Department of Medicine and Geriatrics, Tuen Mun Hospital, Hong Kong, People's Republic of China.
Background And Objectives: Mitochondrial disorders are multiorgan disorders resulting in significant morbidity and mortality. We aimed to characterize death-associated factors in an international cohort of deceased individuals with mitochondrial disorders.
Methods: This cross-sectional multicenter observational study used data provided by 26 mitochondrial disease centers from 8 countries from January 2022 to March 2023.
Survival and Its Predictors Among Patients Receiving Transarterial Chemoembolization for Hepatocellular Carcinoma in Ethiopia: A 6-Year Follow-Up Study.
JCO Glob Oncol
January 2025
Department of Public Health, Myungsung Medical College, Addis Ababa, Ethiopia.
Purpose: To analyze survival and its predictors among patients with hepatocellular carcinoma (HCC) receiving transarterial chemoembolization (TACE) in Ethiopia.
Materials And Methods: We conducted a retrospective cohort study among patients who received TACE for HCC at MCM Hospital from December 1, 2016, to December 31, 2022. Data were extracted from patients' medical records, and vital status was ascertained from the patients' charts or by phone call to the next of kin.
Oral Cyclophosphamide for Patients With Metastatic Castration-Resistant Prostate Cancer in a Scenario of Limited Health Care Resources.
JCO Glob Oncol
January 2025
Genitourinary Medical Oncology Service, Instituto do Câncer do Estado de São Paulo (ICESP), University of São Paulo, São Paulo, Brazil.
Purpose: Prior noncontemporary studies showed that oral cyclophosphamide is an active treatment of metastatic castration-resistant prostate cancer (mCRPC). However, cyclophosphamide is currently underutilized in routine clinical practice given the lack of survival benefit and the emergence of more effective treatments.
Methods: We retrospectively reviewed our institutional database to identify patients with mCRPC treated with cyclophosphamide.
Treatment and Outcomes of Pancreatic Cancer in Armenia: A Retrospective Study From Resource-Limited Settings.
JCO Glob Oncol
January 2025
Adults Solid Tumors Chemotherapy Department, Yeolyan Hematology and Oncology Center, Yerevan, Armenia.
Purpose: Pancreatic cancer is one of the deadliest cancers in the world. In Armenia, it is 12th by incidence. The aim of this study is to evaluate treatment and outcomes of pancreatic cancer in Armenia during the past 12 years.
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